1 files changed, 18 insertions, 0 deletions
diff --git a/js/src/tests/non262/Array/group-callback-evaluation.js b/js/src/tests/non262/Array/group-callback-evaluation.js
new file mode 100644
index 0000000000..4fbb6467e7
--- /dev/null
+++ b/js/src/tests/non262/Array/group-callback-evaluation.js
@@ -0,0 +1,18 @@
+var array = [1, 2, 3];
+
+var calls = 0;
+
+var grouped = Object.groupBy(array, () => {
+  calls++;
+
+  return {
+    toString() {
+      return "a";
+    }
+  }
+});
+
+assertEq(calls, 3);
+
+if (typeof reportCompare === "function")
+  reportCompare(0, 0);